Gigabyte GA-8S648FXM, G-MAX MA15 Manual

When you installing AGP card, please make sure the following notice is fully understood and practiced. If your AGP card has "AGP 4X/8X (1.5V) notch" (show below), please make sure your AGP card is AGP 4X/8X(1.5V).

AGP 4X/8X notch

Caution: AGP 2X card is not supported by SiS® 648FX. You might experience system unable to boot up normally. Please insert an AGP 4X/8X card.

Example 1: Diamond Vipper V770 golden finger is compatible with 2X/4X mode AGP slot. It can be switched between AGP 2X(3.3V) or 4X(1.5V) mode by adjusting the jumper. The factory default for this card is 2X(3.3V). The GA-8S648FXM (or any AGP 4X/8X only) motherboards might not function properly, if you install this card without switching the jumper to 4X(1.5) mode in it.

Example 2: Some ATi Rage 128 Pro graphics cards made by "Power Color", the graphics card manufacturer & some SiS 305 cards, their golden finger is compatible with 2X(3.3V)/4X(1.5V) mode AGP slot, but they support 2X(3.3V) only. The GA-8S648FXM (or any AGP 4X/8X only) motherboards might not function properly, If you install this card in it.

Note : Although Gigabyte's AG32S(G) graphics card is based on ATi Rage 128 Pro chip, the design of AG32S(G) is compliance with AGP 4X(1.5V) specification. Therefore, AG32S(G) will work fine with SiS® 648FX based motherboards.

0The author assumes no responsibility for any errors or omissions that may appear in this document nor does the author make a commitment to update the information contained herein.

0Third-party brands and names are the property of their respective owners.

0Please do not remove any labels on motherboard, this may void the warranty of this motherboard.

0Due to rapid change in technology, some of the specifications might be out of date before publication of this booklet.

EN 55011

EN 55013

EN 55014

EN 55015

EN 55020

7 EN 55022

DIN VDE 0855

part 10

part 12

7 CE marking

EN 60065

EN 60335

Declaration of Conformity

We, Manufacturer/Importer

(full address)

G.B.T. Technology Träding GMbH

Ausschlager Weg 41, 1F, 20537 Hamburg, Germany

declare that the product

( description of the apparatus, system, installation to which it refers)

Mother Board

GA-8S648FXM is in conformity with

(reference to the specification under which conformity is declared) in accordance with 89/336 EEC-EMC Directive

Limits and methods of measurement of radio disturbance characteristics of industrial,scientific and medical (ISM high frequency equipment

Limits and methods of measurement of radio disturbance characteristics of broadcast receivers and associated equipment

Limits and methods of measurement of radio disturbance characteristics of household electrical appliances, portable tools and similar electrical apparatus

Limits and methods of measurement of radio disturbance characteristics of fluorescent lamps and luminaries

Immunity from radio interference of broadcast receivers and associated equipment

Limits and methods of measurement of radio disturbance characteristics of information technology equipment

Cabled distribution systems; Equipment for receiving and/or distribution from sound and television signals

EN 61000-3-2* 7 EN 60555-2

EN 61000-3-3*

7EN 60555-3

7EN 50081-1

7EN 50082-1

EN 55081-2

EN 55082-2

ENV 55104

EN50091-2

Disturbances in supply systems cause by household appliances and similar electrical equipment “Harmonics”

Disturbances in supply systems cause by household appliances and similar electrical equipment “Voltage fluctuations”

Generic emission standard Part 1: Residual commercial and light industry

Generic immunity standard Part 1: Residual commercial and light industry

Generic emission standard Part 2: Industrial environment

Generic emission standard Part 2: Industrial environment

lmmunity requirements for household appliances tools and similar apparatus

EMC requirements for uninterruptible power systems (UPS)

	(EC conformity marking)
The manufacturer also declares the conformity of above mentioned product
with the actual required safety standards in accordance with LVD 73/23 EEC
Safety requirements for mains operated	EN 60950	Safety for information technology equipment
electronic and related apparatus for		including electrical bussiness equipment
household and similar general use
Safety of household and similar	EN 50091-1	General and Safety requirements for
electrical appliances		uninterruptible power systems (UPS)

	Manufacturer/Importer
	Date : July 7, 2003	Signature:	Timmy Huang
(Stamp)		Name:	Timmy Huang

DECLARATION OF CONFORMITY

Per FCC Part 2 Section 2.1077(a)

Responsible Party Name:G.B.T. INC. (U.S.A.)

Address: 17358 Railroad Street City of Industry, CA 91748

Phone/Fax No:[phone]/ [phone] hereby declares that the product

Product Name: Motherboard

Model Number: GA-8S648FXM

Conforms to the following specifications:

FCC Part 15, Subpart B, Section 15.107(a) and Section 15.109 (a),Class B Digital Device

Supplementary Information:

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful and (2) this device must accept any inference received, including that may cause undesired operation.

Representative Person’s Name: ERIC LU

Signature: Eric Lu

Date: July 7, 2003

GA-8S648FXM

P4 Titan Series Motherboard

USER'S MANUAL

Pentium® 4 Processor Motherboard

Rev. 1001 12ME-8S648FXM-1001

English

Table of Content
Item Checklist .........................................................................................	4
Chapter 1 Introduction ............................................................................	5
Features Summary ......................................................................................	5
GA-8S648FXM Motherboard Layout ..........................................................	7
Block Diagram .............................................................................................	8
Chapter 2 Hardware Installation Process .............................................	11
Step 1: Install the Central Processing Unit (CPU).....................................	12
Step 1-1: CPU Installation ..............................................................................................	12
Step 1-2: CPU Cooling Fan Installation ........................................................................	13
Step 2: Install Memory Modules ................................................................	14
Step 3: Install expansion cards .................................................................	15
Step 4: Connect ribbon cables, cabinet wires and power supply ............	16
Step 4-1: I/O Back Panel Introduction ...........................................................................	16
Step 4-2: Connectors Introduction .................................................................................	18
Chapter 3 BIOS Setup .........................................................................	31
The Main Menu (For example: BIOS Ver. : F1d) ......................................	32
Standard CMOS Features.........................................................................	34
Advanced BIOS Features ..........................................................................	37
Integrated Peripherals ..............................................................................	39
Power Management Setup .......................................................................	43
PnP/PCI Configurations .............................................................................	46
PC Health Status........................................................................................	47

GA-8S648FXM Motherboard

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English

Frequency/Voltage Control ........................................................................	49
Top Performance ......................................................................................	51
Load Fail-Safe Defaults .............................................................................	52
Load Optimized Defaults ...........................................................................	53
Set Supervisor/User Password ..................................................................	54
Save & Exit Setup .......................................................................................	55
Exit Without Saving ...................................................................................	56
Chapter 4 Technical Reference ...........................................................	59
@BIOS™ Introduction ...............................................................................	59
EasyTune™ 4 Introduction ........................................................................	60
Flash BIOS Method Introduction ...............................................................	61
2- / 4- / 6-Channel Audio Function Introuction ..........................................	65
Jack-Sensing Introuction ...........................................................................	71
Xpress Recovery Introduction ...................................................................	73
Chapter 5 Appendix .............................................................................	77

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Table of Content

English

Item Checklist

The GA-8S648FXM motherboard	Serial ATA cable x 1
CD for motherboard driver & utility	2 Port USB Cable x 1
GA-8S648FXM user's manual	4 Port USB Cable x 1
Quick PC Installation Guide	SPDIF Kit x 1 (SPDIF Out Kit)
SATA RAID Manual	IEEE 1394 Cable x1
GC-SATA Card (optional)	Audio Combo Kit x 1
(Manual; SATA cable x 1; Power cable x 1)	(SURROUND-Kit + SPDIF Out Kit)
I/O Shield	Motherboard Settings Label
IDE cable x 1 / Floppy cable x 1

Computer motherboards and expansion cards contain very delicate Integrated Circuit (IC) chips. To protect them against damage from static electricity, you should follow some precautions whenever you work on your computer.

1.Unplug your computer when working on the inside.

2.Use a grounded wrist strap before handling computer components. If you do not have one, touch both of your hands to a safely grounded object or to a metal object, such as the power supply case.

3.Hold components by the edges and try not touch the IC chips, leads or connectors, or other components.

4.Place components on a grounded antistatic pad or on the bag that came with the components whenever the components are separated from the system.

5.Ensure that the ATX power supply is switched off before you plug in or remove the ATX power connector on the motherboard.

Installing the motherboard to the chassis...

If the motherboard has mounting holes, but they don't line up with the holes on the base and there are no slots to attach the spacers, do not become alarmed you can still attach the spacers to the mounting holes. Just cut the bottom portion of the spacers (the spacer may be a little hard to cut off, so be careful of your hands). In this way you can still attach the motherboard to the base without worrying about short circuits. Sometimes you may need to use the plastic springs to isolate the screw from the motherboard PCB surface, because the circuit wire may be near by the hole. Be careful, don't let the screw contact any printed circuit write or parts on the PCB that are near the fixing hole, otherwise it may damage the board or cause board malfunctioning.

GA-8S648FXM Motherboard

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Chapter 1 Introduction

Features Summary

Form Factor	y	24.4cm x 24.4cm Micro ATX size form factor, 4 layers PCB
CPU	y	Socket 478 for Intel® Micro FC-PGA2 Pentium® 4 processor
	y	Support Intel® Pentium® 4 (Northwood, Prescott) processor
	y Support Intel® Pentium® 4 Processor with HT Technology<Note >
	y Intel® Pentium® 4 800/533/400MHz FSB
	y 2nd cache depends on CPU
Chipset	y	SiS® Chipset 648FX HOST/AGP/Controller
	y SiS® 963 I/O Controller Hub
Memory	y	2 184-pin DDR DIMM sockets
	y	Supports DDR400/DDR333/DDR266/DDR200 DIMM
	y Supports 128MB/256MB/512MB/1GB unbuffered DRAM
	y Supports up to 2GB DRAM (Max)
	y Supports only DDR DIMM
I/O Control	y	IT8705
Slots	y	1 AGP slot 4X/8X (1.5V) device support
	y 3 PCI slots support 33MHz & PCI 2.3 compliant
On-Board IDE	y	2 IDE controllers provides IDE HDD/CD-ROM (IDE1, IDE2) with
		PIO, Bus Master (Ultra DMA33/ATA66/ATA100/ATA133) operation
		modes
	y Can connect up to 4 IDE devices
On-Board Peripherals	y	1 Floppy port supports 2 FDD with 360K, 720K,1.2M, 1.44M
		and 2.88M bytes
	y 1 Parallel port supports Normal/EPP/ECP mode
	y 2 Serial ports (COMA & COMB)
	y 6 USB 2.0/1.1 ports (2 x Rear, 4 x Front by cable)
	y 1 Front Audio connector
Hardware Monitor	y	CPU/System fan revolution detect
	y	CPU/System temperature detect
	y	CPU warning temperature
	y	System voltage detect
	y CPU/System fan fail warning
		to be continued......

English

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Introduction

English

On-Board LAN	y	Builit in RTL8100C Chipset
	y	1 RJ45 port
On-Board Sound	y	Realtek ALC655 codec
	y Supports Jack-Sensing function
	y Line Out / 2 front speaker
	y Line In / 2 rear speaker (by s/w switch)
	y Mic In / center & subwoofer (by s/w switch)
	y SPDIF In / Out
	y CD In / AUX In / Game port
PS/2 Connector	y	PS/2 Keyboard interface and PS/2 Mouse interface
BIOS	y	Licensed Phoenix BIOS, 2M bit BIOS
	y	Supports Q-Flash
Additional Features	y	PS/2 Keyboard power on by password
	y PS/2 Mouse power on
	y STR (Suspend-To-RAM)
	y	AC Recovery
	y Poly fuse for keyboard over-current protection
	y USB KB/Mouse wake up from S3
	y	Supports @BIOS™

y Supports EasyTune 4™

HT functionality requirement content :

Enabling the functionality of Hyper-Threading Technology for your computer system requires all of the following platform components:

-CPU: An Intel® Pentium 4 Processor with HT Technology

-Chipset: A SiS® Chipset that supports HT Technology

-BIOS: A BIOS that supports HT Technology and has it enabled

-OS: An operation system that has optimizations for HT Technology

Please set the CPU host frequency in accordance with your processor's specifications.

We don't recommend you to set the system bus frequency over the CPU's specification because these specific bus frequencies are not the standard specifications for CPU, chipset and most of the peripherals. Whether your system can run under these specific bus frequencies properly will depend on your hardware configurations, including CPU, Chipsets, SDRAM, Cards…etc.

GA-8S648FXM Motherboard

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GA-8S648FXM Motherboard Layout

KB_MS		CPU_FAN
COMA
	LPT
COMB
OUT	GAME
INLINE LINEIN		ATX_12V
MIC_
USB	LAN

RTL

8100C

AGP

CODEC

SPDIF_IO

	_IN	CD_IN
	AUX
	F_AUDIO	SUR_CEN

SOCKET 478

SiS 648FX

PCI1

PCI2

PCI3

BIOS	IT8705
RAM LED	ATX

GA-8S648FXM		IDE2	IDE1
DDR1	DDR2		FDD
		BATTERY
			SYS _FAN
	SiS 963		CI
USB1	USB2		_FPANEL
CLR_PWD
_	_	BUZZER
F	F

PWR_LED

English

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Introduction

English

Block Diagram

AGP 4X/8X

AGPCLK (66MHz)

3 PCI RJ45

Pentium 4

CPUCLK+/- (100/133/200MHz)

Socket 478

CPU

System Bus

800/533/400MHz

266/333/400MHz

SiS 648FX

DDR RAM

MCHCLK (100/133/200MHz)

66 MHz

RTL

33

MHz

14.318 MHz

48 MHz

8100C

BIOS

SiS 963

LPC BUS

Game Port

Link

IT8705

Floppy

LPT Port

AC97

24 MHz

PS/2 KB/Mouse

33 MHz

AC97

6 USB

ATA33/66/100/133

CODEC

Ports

IDE Channels

2 COM Ports

PCICLK

(33MHz)

MIC LINE-IN LINE-OUT

GA-8S648FXM Motherboard

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English

- 9 -

Introduction

English

GA-8S648FXM Motherboard

- 10 -

Chapter 2 Hardware Installation Process

To set up your computer, you must complete the following steps: Step 1- Install the Central Processing Unit (CPU)

Step 2- Install memory modules Step 3- Install expansion cards

Step 4- Connect ribbon cables, cabinet wires, and power supply

Step 1

Step 4

Step 2

Step 4

Step 4

Step 3

English

Congratulations! You have accomplished the hardware installation!

Turn on the power supply or connect the power cable to the power outlet. Continue with the BIOS/software installation.

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Hardware Installation Process

English

Step 1: Install the Central Processing Unit (CPU)

Before installing the processor, adhere to the following warning:

1.Please make sure the CPU type is supported by the motherboard.

2.If you do not match the CPU socket Pin 1 and CPU cut edge well, it will cause improper installation. Please change the insert orientation.

Step 1-1: CPU Installation

Angling the rod to 650

1.Angling the rod to 65-degree maybe feel a kind of tight , and then continue pulltherodto90-degreewhenanoise "cough" made.

Socket

Actuation

Lever

2. Pull the rod to the 90-degree directly.

Pin1 indicator

3. CPU Top View

Pin1 indicator

4.Locate Pin 1 in the socket and look for a (golden) cut edge on the CPU upper corner. Then insert the CPU into the socket.

GA-8S648FXM Motherboard

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Step 1-2: CPU Cooling Fan Installation

Before installing the CPU cooling fan, adhere to the following warning:

1.Please use Intel approved cooling fan.

2.We recommend you to apply the thermal tape to provide better heat conduction between your CPU and cooling fan.

(The CPU cooling fan might stick to the CPU due to the hardening of the thermal paste. During this condition if you try to remove the cooling fan, you might pull the processor out of the CPU socket alone with the cooling fan, and might damage the processor. To avoid this from happening, we suggest you to either use thermal tape instead of thermal paste, or remove the cooling fan with extreme caution.)

3.Make sure the CPU fan power cable is plugged in to the CPU fan connector, this completes the installation.

Please refer to CPU cooling fan user's manual for more detail installation procedure.

English

1. Fasten the cooling fan supporting-	2. Make sure the CPU fan is plugged
base onto the CPU socket on the	to the CPU fan connector, than
motherboard.	install complete.

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Hardware Installation Process

English

Step 2: Install Memory Modules

Before installing the memory modules, adhere to the following warning: 1. When RAM LED is ON, do not install / remove DIMM from socket.

2. Please note that the DIMM module can only fit in one direction due to the one notch. Wrong orientation will cause improper installation. Please change the insert orientation.

The motherboard has 2 dual inline memory module (DIMM) sockets. The BIOS will automatically detects memory type and size. To install the memory module, just push it vertically into the DIMM socket. The DIMM module can only fit in one direction due to the notch. Memory size can vary between sockets.

Notch

DDR

1.The DIMM socket has a notch, so the DIMM memory module can only fit in one direction.

2.Insert the DIMM memory module vertically into the DIMM

socket. Then push it down.

3. Close the plastic clip at both edges of the DIMM sockets to lock the DIMM module.

Reverse the installation steps when you wish to remove the DIMM module.

GA-8S648FXM Motherboard

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DDR Introduction

Established on the existing SDRAM industry infrastructure, DDR (Double Data Rate) memory is a high performance and cost-effective solution that allows easy adoption for memory vendors, OEMs and system integrators.

DDR memory is a sensible evolutionary solution for the PC industry that builds on the existing SDRAM infrastructure, yet makes awesome advances in solving the system performance bottleneck by doubling the memory bandwidth. DDR SDRAM will offer a superior solution and migration path from existing SDRAM designs due to its availability, pricing and overall market support. PC2100 DDR memory (DDR266) doubles the data rate through reading and writing at both the rising and falling edge of the clock, achieving data bandwidth 2X greater than PC133 when running with the same DRAM clock frequency. With peak bandwidth of 3.2GB per second, DDR memory enables system OEMs to build high performance and low latency DRAM subsystems that are suitable for servers, workstations, high-end PC's and value desktop SMA systems.

Step 3: Install expansion cards

1.Read the related expansion card's instruction document before install the expansion card into the computer.

2.Remove your computer's chassis cover, screws and slot bracket from the computer.

3.Press the expansion card firmly into expansion slot in motherboard.

4.Be sure the metal contacts on the card are indeed seated in the slot.

5.Replace the screw to secure the slot bracket of the expansion card.

6.Replace your computer's chassis cover.

7.Power on the computer, if necessary, setup BIOS utility of expansion card from BIOS.

8.Install related driver from the operating system.

English

Please carefully pull out the small white-drawable bar at the end of the AGP slot when you try to

install / uninstall the AGP card. Please align the AGP Card AGP card to the onboard AGP slot and press firmly down on the slot. Make sure your AGP card is

locked by the small white-drawable bar.

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Hardware Installation Process

English

Step 4: Connect ribbon cables, cabinet wires and power supply

Step 4-1: I/O Back Panel Introduction

X	Y	Z	\
		[

X PS/2 Keyboard and PS/2 Mouse Connector

PS/2 Mouse Connector (6 pin Female)

PS/2 Keyboard Connector (6 pin Female)

This connector supports standard PS/2 keyboard and PS/2 mouse.

YParallel Port and Serial Ports (COMA/COMB)

Parallel Port (25 pin Female)

COMA COMB Serial Port (9 pin Male)

This connector supports 2 standard COM ports and 1 Parallel port. Device like printer can be connected to Parallel port; mouse and modem etc. can be connected to Serial ports.

GA-8S648FXM Motherboard

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Z Game / MIDI Ports

This connector supports joystick, MIDI

keyboard and other relate audio devices.

Joystick/ MIDI (15 pin Female)

[ Audio Connectors

Line Out		MIC In
(Front Speaker)		(Center and
		Subwoofer)

Line In

(Rear Speaker)

After install onboard audio driver, you may connect speaker to Line Out jack, microphone to MIC In jack. Device like CD-ROM,walkman etc. can be connected to Line-In jack.

Please note:

You are able to use 2-/4-/6-channel audio feature by S/W selection.

If you want to enable 6-channel function, you have 2 choose for hardware connection.

Method1:

Connect "Front Speaker" to "Line Out" Connect "Rear Speaker" to "Line In"

Connect "Center and Subwoofer" to "MIC Out ".

Method2:

You can refer to page 26, and contact your nearest dealer for optional SUR_CEN cable.

If you want the detail information for 2-/4-/6-channel audio setup installation, please refer to page 65.

\ USB/LAN Connector

LAN

USB 0

USB 1

Before you connect your device(s) into USB connector(s), please make sure your device(s) such as USB keyboard,mouse, scanner, zip, speaker...etc. Have a standard USB interface. Also make sure your OS supports USB controller. If your OS does not support USB controller, please contact OS vendor for possible patch or driver upgrade. For more information please contact your OS or device(s) vendors.

English

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Hardware Installation Process

English

Step 4-2: Connectors Introduction

3			1			9

				2
				6
				5
				18
13				4
				16
12
				7
11
10	14	17	15	8

1)	ATX_12V	10)	F_AUDIO
2)	ATX	11)	CD_IN
3)	CPU_FAN	12)	AUX_IN
4)	SYS_FAN	13)	SPDIF_IO
5)	FDD	14)	SUR_CEN
6)	IDE1 / IDE2	15)	F_USB1 / F_USB2
7)	F_PANEL	16)	CI
8)	PWR_LED	17)	CLR_PWD
9)	RAM_LED	18)	BAT

GA-8S648FXM Motherboard

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1) ATX_12V (+12V Power Connector)

This connector (ATX_12V) supplies the CPU operation voltage (Vcore). If this "ATX_12V connector" is not connected, system cannot boot.

			Pin No.	Definition
	2	1	1	GND
			2	GND
	4	3
			3	+12V
			4	+12V

2) ATX (ATX Power)

AC power cord should only be connected to your power supply unit after ATX power cable and other related devices are firmly connected to the mainboard.

			Pin No.	Definition
			1	3.3V
			2	3.3V
			3	GND
	10	20	4	VCC
			5	GND
			6	VCC
			7	GND
			8	Power Good
			9	5V SB (stand by +5V)
			10	+12V
			11	3.3V
			12	-12V
			13	GND
	1	11	14	PS_ON(soft on/off)
			15	GND
			16	GND
			17	GND
			18	-5V
			19	VCC
			20	VCC

English

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Hardware Installation Process

English

3) CPU_FAN (CPU Fan Connector)

Please note, a proper installation of the CPU cooler is essential to prevent the CPU from running under abnormal condition or damaged by overheating. The CPU fan connector supports Max. current up to 600 mA.

1	Pin No.	Definition
	1	GND
	2	+12V
	3	Sense

4) SYS_FAN (System Fan Connector)

This connector allows you to link with the cooling fan on the system case to lower the system temperature.

Pin No.	Definition
1	GND
2	+12V
3	Sense

1

GA-8S648FXM Motherboard

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5) FDD (Floppy Connector)

Please connect the floppy drive ribbon cables to FDD. It supports 360K, 1.2M, 720K, 1.44M and 2.88M bytes floppy disk types.

The red stripe of the ribbon cable must be the same side with the Pin1.

34 33

2 1

English

6) IDE1 / IDE2 (IDE1 / IDE2 Connector)

Important Notice:

Please connect first hard disk to IDE1 and connect CD-ROM to IDE2. The red stripe of the ribbon cable must be the same side with the Pin1.

40

39

2

1

IDE2 IDE1

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Hardware Installation Process

English

7) F_PANEL (2 x 10 pins Connector)

Please connect the power LED, PC speaker, reset switch and power switch etc of your chassisfront panel to the F_PANEL connector according to the pin assignment above.

SPEAK-

20

19

Speaker

Connector

SPEAK+

1

NC

S o f t P o w e r

PW-

1

RES+

Connector

PW+

1

RES-

Reset Switch

MSG-

HD-

Message LED/

MSG+

HD+

IDE Hard Disk

Power/

1

1

Active LED

Sleep LED

2

1

HD (IDE Hard Disk Active LED)	Pin 1: LED anode(+)
(Blue)	Pin 2: LED cathode(-)
SPK (Speaker Connector)	Pin 1: VCC(+)
(Amber)	Pin 2- Pin 3: NC
	Pin 4: Data(-)
RES (Reset Switch)	Open: Normal Operation
(Green)	Close: Reset Hardware System
PW (Soft Power Connector)	Open: Normal Operation
(Red)	Close: Power On/Off
MSG(Message LED/ Power/ Sleep LED)	Pin 1: LED anode(+)
(Yellow)	Pin 2: LED cathode(-)
NC (Purple)	N C

GA-8S648FXM Motherboard

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8) PWR_LED

PWR_LED is connect with the system power indicator to indicate whether the system is on/off. It will blink when the system enters suspend mode. If you use dual color LED, power LED will turn to another color.

1	Pin No.	Definition
	1	MPD+
	2	MPD-
	3	MPD-

9) RAM_LED

Do not remove memory modules while RAM_LED is on. It might cause short or other unexpected damages due to the stand by voltage. Remove memory modules only when AC power cord is disconnected.

_

+

English

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Hardware Installation Process

English

10) F_AUDIO (Front Audio Connector)

If you want to use Front Audio connector, you must remove 5-6, 9-10 Jumper.

In order to utilize the front audio header, your chassis must have front audio connector. Also please make sure the pin assigment on the cable is the same as the pin assigment on the MB header. To find out if the chassis you are buying support front audio connector, please contact your dealer. Please note, you can have the alternative of using front audio connector or of using rear audio connector to play sound.

		Pin No.	Definition
		1	MIC
		2	GND
2	10	3	REF
		4	Power
1	9	5	Front Audio (R)
		6	Rear Audio (R)
		7	Reserved
		8	No Pin
		9	Front Audio (L)
		10	Rear Audio (L)

11) CD_IN (CD In Connector)

Connect CD-ROM or DVD-ROM audio out to the connector.

	1
			Pin No.	Definition
			1	CD-L
			2	GND
			3	GND
			4	CD-R

GA-8S648FXM Motherboard

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12) AUX_IN (AUX In Connector)

Connect other device (such as PCI TV Tunner audio out) to the connector.

	1		Pin No.	Definition
			1	AUX-L
			2	GND
			3	GND
			4	AUX-R

13) SPDIF_IO (SPDIF In / Out Connector)

The SPDIF output is capable of providing digital audio to external speakers or compressed AC3 data to an external Dolby Digital Decoder. Use this feature only when your stereo system has digital input function. Use SPDIF IN feature only when your device has digital output function.

Be careful with the polarity of the SPDIF_IO connector. Check the pin assignment carefully while you connect the SPDIF cable, incorrect connection between the cable and connector will make the device unable to work or even damage it. For optional SPDIF cable, please contact your local dealer.

6 5	Pin No.	Definition
	1	VCC
	2	No Pin
2 1	3	SPDIF
	4	SPDIFI
	5	GND
	6	GND

English

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Hardware Installation Process